We continue now with the judd family feud. Ashley accusing her sister, wynonna, of trying to spy on her after a tracking device was found on ashley's car. Linzie janis has the story. Reporter: In a police report obtained by abc news, ashley judd accuses half sister wynonna of being behind a tracking device put or her car. If there's been a tracker placed on her vehicle without her permission, then, based on tennessee law, that person is subject to be prosecuted. Reporter: According to the report, filed last month, a tennessee mechanic found a wireless gps device on a minicooper owned by ashley judd, being driven by an unnamed female. The document states ashley judd proved she had custody of the driver and believes the device was placed there by wynonna. The device was traced back to a private investigator, who, according to the police report, was working for wynonna judd to spy on the driver. Wynonna gave the device to arch kelly, her ex-husband. Kelly has since denied the allegation. The police report says there's an ongoing custody dispute between the judds and the device was placed there to track the movement. The public likes a good family feud. I don't think this situation reaches that crescendo. Reporter: If an an interview with dan harris, ashley opened up about her difficult relsship with her mother and sister. I absolutely though that my parents -- love and adore me. And I'm so grateful that today we have relationships. Reporter: Ashley, currently working on a new film. Way nen that, now on tour. And arch kelly, all declined to comment. Police have described the investigation as inactive. For "good morning america," linzie janis, abc news, new york. Sincerely hope they can work

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